They want to record all at the same time. That means they want to be in the same room. Don't ruin their vibe so you can isolate each channel.
DI the bass + keyboard but also mic their amps. Use a little judicious isolation, gobos or something rigged, around the sax and drums but nothing higher than 4ft or so - they want to see each other. Stand in the middle of the room and put a couple of mics where everything sounds good. You might get most of your mix from that.
Any of those mics will do. Throw up up and listen to 'em. 3 on the drums is enough. i'd put one between the snare +hh and one on the kick. you can put another overhead but you probably won't need it for the bleed you'll get. And dude, borrow some more mic pres, you're embarrassing yourself and us with that yamaha and tascam stuff. Something, anything half decent - symetrix, rane, or an allen + heath board. Otherwise you'll be banned from gearslutz.