Well Kev, probably not what you want to hear/read, but a Laverda doesn't seem to be the right bike for you... unless you have a skilled mate willing to help you out. Having everything done by professionals will quickly drain your piggy bank, spares are disappearing and prices rising steadily. '90s Ducatis are low-maintenance and pretty cheap in comparison.
Although often being described back in the day as "rugged" and "indestructable", the big Breganze Laverda twins and triples are actually quite fickle. If maintained to a high level, they actually are rugged and indestructable. But unfortunately, many most bikes on the market have rarely experienced the TLC they require, hence many struggle from one breakdown to the next, requiring constant attention. This is where a fairly high level of skill and dedication comes into the equation, next to a definite willingness to part with hard-earned cash, should the occasion arise.
Best option, if you really, really want one, is to find a bike that has gone through a total and thorough rebuild from a trustworthy restorer. Have documented steps of the rebuild shown, not just a shiny bike in a dimly-lit shed. Do not fall into the trap of fresh orange paint and new chrome, you need to actually scratch the surface to find a good, honest bike. Don't be fooled by low-mileage odometers unless proof is supplied. I've come across a good number of very expensive polished turds, with the owner having to sink (at least) the same purchase amount into the bike, just to get it roadworthy, safe and rideable. Good bikes are not cheap, expensive bikes are not always good...
Laverda ownership can be a deep pond, depends on how carefull you are if it turns out to be muddy or clear. If looking at a bike with the intention to buy, take along somebody that intricately knows his way around them, not somebody that briefly once had one 35 years ago. There's a lot more to see than what meets the eye!
Above all, Laverda built more than just Jotas. They might be the most exciting for some, but other models can offer a far more pleasant riding experience.
piet