i wouldnt go for a solid flywheel, the negatives out weigh the small saving. it will be no harder than any other similar sized car. have you got the space, tools, stands, jacks, etc. as well as a mate to help you out?
if so then go for it.
Personally i'd pay someone else to do it and i do a lot of my own repairs/maintenance. if i had access to a set of ramps i'd do it myself.