Why not simply create an 'Extensions (Disabled)' folder in your System Folder. Your interesting collection of Extensions looks as if it contains the survivors from some kind of business use of the Mac just after Armageddon has passed by. You can discover the origin of each by highlighting it with a single click, and then using command-i to invoke Get Info. If it does not admit to being part of the presently-installed System, note it on paper.
Then drag all non-Apple extensions to the Extensions (Disabled) folder. If the Mac boots satisfactorily with the remainder, you have a basis from which to add back the relevant third-party extensions one at a time before testing the Mac's ability to boot and play with the E-MU. I don't know the keyboard, but I have to ask whether you need, and are using, an Apple (preferably) or other known-compatible MIDI interface to a serial port? If it is non-Apple, has it its own need for extension(s)? Or does the E-MU already contain any necessary interface and have only an external serial cable?
Another consideration is that your Extensions folder contains many fewer than even 7.0.1 ought to have. From the possibly tenuous example of a PB 160 running 7.1.3 that I have beside me, up to 30 Apple extensions may be appropriate to 7.0.1 even if they are not all needed for all installations. Possibly your list could be bettered, even if you (or the Classic II) are RAM-challenged, with either a completely new installation of 7.0.1 or (revolutionary though 7.0.1 was in 1788), better again, 7.1.3.
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Then drag all non-Apple extensions to the Extensions (Disabled) folder. If the Mac boots satisfactorily with the remainder, you have a basis from which to add back the relevant third-party extensions one at a time before testing the Mac's ability to boot and play with the E-MU. I don't know the keyboard, but I have to ask whether you need, and are using, an Apple (preferably) or other known-compatible MIDI interface to a serial port? If it is non-Apple, has it its own need for extension(s)? Or does the E-MU already contain any necessary interface and have only an external serial cable?
Another consideration is that your Extensions folder contains many fewer than even 7.0.1 ought to have. From the possibly tenuous example of a PB 160 running 7.1.3 that I have beside me, up to 30 Apple extensions may be appropriate to 7.0.1 even if they are not all needed for all installations. Possibly your list could be bettered, even if you (or the Classic II) are RAM-challenged, with either a completely new installation of 7.0.1 or (revolutionary though 7.0.1 was in 1788), better again, 7.1.3.
de