hey magnum!it is so very possible to geat a wonderful sound with a 4-track,even limited to 2 tracks at a time.i used to think that 4 tracks were plenty on cassette,i got spoiled by digital 8-track,but the best recordings have been abnd still can be made with 4-tracks.the important aspects are the style of music,the live performance factor,and the type of sound you are trying to convey.if this is a full band that is well rehearsed, in the pocket,and you wanna capture the performance,i see that with the gear you got would be more than adequate.however,if this is limited to a few musicians playing more than one instruments on one song,then,you got bouncing tracks,wich certainly can work,it's just a matter of deciding which instruments you wanna commit to the same track.a large percentage of my recording experience is me playing all the instruments ,thus bouncing 2 tracks to 1,and that is all dependent on what goes i=on with the song,like if the bass and the electric are very sparse and easy to hear them together (being able to distinguish them apart)then,i have them share tracks.but,alas,i don't know what style music,what sound you want ,if you plan on overdubbing,so forth.i was in a band with the similar instrumentation,guitar,piano,bass(electric/and upright)drums,2 tenor saxes ,and one trumpet.our songs went from anywhere to be-bop,blues,reggae,tango,to rock and roll.we liked to sub mix the drumsand have the rhythm section intwo tracks stereo(more of an overall live mic'ed situation)but we also seperated tracks and did clean tracks with it all seperated before we bounced them together.then we did the horns all together with two mics,one track(these were usually specific horn lines they played together live anyway)then we had the final track for lead vocals and a solo sharing the track,(they rarely played at the same time).the horns even sang,or yelled backups,but they of course weren't playing horns at the same time,so backups were on the horn track.the levels were consistent to the live dynamics,so we didn't have to ride the faders at mixdown,it was a nice easy mix once we knew where we were.plus ,you got those effects units to add to the production,which could certainly add some punch to tracks that are lacking,or just beef up the drums,or whatever.but,you know what?i have no clue to what music you plan on doing,or what at all anything,so what i just said,could have no bearing,could be so useless,out of context with you,oh well.just a thought.you know that there have been some great albums put out from cassette 4 track right?you heard ween,yeah?most their albums are done on cassette 4-track,there was this whole scene where everybody wanted to be lo-fi as possible and put it out on cd.but,again ,i don't know what you wanna do with it,how far you wanna take it,and so on.good luck,and i hope i said something of meaning