Raise 4 or 5xBB with anything.
Yes.
Otherwise dont just call with anyold crap imo. If both cards are suited then definatly see the flop. Same with unsuited connectors, gappers even two gappers like 10 7. imo dont call with j2 or other crap. You need plenty of help on the flop and that doesnt happen often enough to justify all the calls.
But if you like gambOOl or just plain aggression. Raise it 5bbs and be done.