dude..first of al ..gud to hear that you are gettin into a band ..that by itself is a
secondly ...never compare yourself man ..its gud to see that your keyboard player is multi-talented and can play the guitar well ..but ..the fact is ..he is playin the keyboard cuz he enjoys playin it ..and u picked up the guitar because u enjoy playin it ...
its very important man..neva compare yourself wit others ..it just not worth it and many times it il pull u down..and if u see a guy who plays better than u ..always remember ..he has also passed the stage you are in rite now ..so dont ever think that u cant make it to his level.
regardin barre chords...hmm..hold any barre chord and play individual notes ..see if all the strings ring...if they dont ..most probably u aint applyin enof pressure or that ur index finger position is wrong ..
try to place ur index finger so tht it extends further than the fretboard ....ahh..hope u got tht ??..
Life aint about the number of breaths you take but the moments that take your breath away !!!!
IF u cant find the needle ..burn the haystack !.