The problem I have with onboard preamps is that you've got limited space, limited power and limited controls as you're trying to squeeze it into limited real estate. Unless you have a 'thing' for the sound of a particular onboard preamp I wouldn't bother. I like to get it correct at the source, the pickups, keep it passive and then use a line driver to get the signal impedance down so little loss on the cable. These days I find I get my sound using a compressor rather than eq, but whatever works for you really. If you like the sound of the pups and you like the sound of your outboard gear, then all should be good.
PS I had a Tobias a few years ago (I know, not quite an MTD!) which had a pine body. Apart from being uber light it sounded great. Can't quite remember why I sold it now!