Thanks for the replies JKDS and Muzzard. First off, I understand what your saying Muzzard, and I doubt I'll be 4b bluffing much or anything of that matter. However, as I said I know a few of the 50nl opponents know these concepts and I would like to understand them as much as possible as well in case I do need to apply them. And I do think 3bing light will fair well at 50nl where people still don't do it very often. But I'm a student of the game and want to learn as much as possible and if have the ability to learn it now, why not? I would need to learn when to properly do these things, or I wouldn't really be learning it, I would just be doing it. I intend to understand the whys, and hows as well, as the whats.

Now to JKDS. The one thing I noticed is you said "99 and AQ fair best of the hands so we move it to range A". Just leave those hands in rance C if you feel they are profitable. Range A is hands we 3b for value. Range B is hands we feel is profitable to call with and Range C is just below B in that we don't think it's a profitable call so we 3b bluff because those are the strongest hands we don't think we will by 3bing for value or calling with.

So what we look at first is what hands we think we crush villians range with and we can 3b those for value. This would be Range A, and against a tight player would be something like the standard QQ+, AK.. Next we decide what hands are profitable for a call. This would include alot of suited connectors, small-mid pps (if given the correct implied odds). Then right below those hands we create Range C which is 3b as a bluff. The next strongest hands would be our suited Aces, Suited Kings, Suited Broadways etc. We realize that some of his range has us dominated, however we are hoping to take the pot down and not play postflop really. And if you wondering about Suited connectors and stuff we have already determined that they are profitable as a call. Also A2s is gonna fair better against KK than 89s is. So we have this:

Range A: QQ+,AKs,AKo [2.6%]
Range B: JJ-22,J9s+,T8s+,97s+,86s+,75s+,65s [7.8%]
Range C: AQs-ATs,A5s-A2s,K9s+,QTs+ [3.9%]
Range D: Hands we fold.

So those are the hands, and respective ranges, that we think is profitable against a tight opener. With Range A hands we are 3bing for value. Range B relies mostly on implied odds and we think we can profitably call with those. Range C is the next best hands we feel a call is unprofitable with so we 3b them as bluffs. So this is about the range I'm thinking is good against TAGG (tight) villians.

Against loose opponents things change a little. Range A is rather static as it's the top hands we feel crush villians range. Range B will now be larger and include suited broadays and some offsuit hands as we feel they are still ahead of villians range and by calling we allow a few things to work in our favor (namely, villians ability to stack of light with hands we dominate such as Ace-rag). Whereas if we were to 3b hands like AJs we would think it was somewhat for value, but we would make him fold out hands like A8s that we would have crushed. And now Range C would be the hands just below range B once again so:

Range A: QQ+,AQs+,AKo [2.9%]
Range B: JJ-22,AJs-ATs,KJs+,QJs,J9s+,T9s,98s,87s,76s,65s,AQo-AJo,KQo [10.9%]
Rance C: ATs-A9s,A5s-A2s,KTs-K9s,QTs-Q9s,J9s-J8s,T8s [3.9%]
*Note some hands fall in both the Range B and Range C categories.

That's what I think is profitable against looser players openinga wide range. And as I said, I don't think alot of players are 4b bluffing at 50nl without history, so it would make alot of sense to 3b light against most ofthe field at 50nl as they don't know how or won't adjust. So we narrow their ranges after the flop, as well as take down alot of pots preflop and get more action on our monster hands. This is of course just my thoughts right now and would like better players to come critique them.