I go along with Bluebird 100%....There is no way you can buy everything you are likely to use for model boat building in one go, even with a massive workshop full of equipment which I used for teaching and building everything from furniture to kitchens then my own house, a list of the most used and useful tools starts with different shaped sanding blocks, most home made and loads of different abrasives for them. These are followed with clamps and cramps, pegs both wooden ones and now stainless steel ones, home made clamps for difficult jobs, rubber bands, string tourniquets and so on. The biggest are 6 foot long sash cramps by Record and they have all been used for model work at some time or other.
Good quality tools only, include fine saws, Swann Morton knives and blades, Stanley knives, chisels and so on. The first power tool I ever bought was a Wolf power drill in 1966 which only had a 1/4 inch capacity chuck. I've still got it and it still works fine, amazing. The second power tool I bought and in my opinion, the best tool I've ever bought was an Aeropiccola Vibro Saw from Euromodels 'way back when' at Seymour Hall Model Engineers Exh. It is also still going and could have built Noahs Ark with all the work it's done over nearly 50 years.
Modern must-have's are a good rechargeable power drill, not so big you can't hardly lift it! maybe a scroll saw for thicker stuff and try to buy the best you can as cheaper ones wander all over the place and break blades. A small sanding machine, the Clarke ones are OK with care,
All the Proxxon products are very good but quite pricey but their top-end modellers circular saw is fantastic, I bought a Bohler model saw (German) for £100 at the ME and it is lovely but hard to get spares like belts etc.
With time and different projects your equipment will grow on a par with the number of paints and glues you buy. Take your time and try to buy the best, In the meantime join a good club and maybe get friendly with a better equipped modeller, bring the beers and work together, That is part of what the hobby is all about.