>>96327704
Last Days: Seasons has a solo mode. It's definitely for sickos. My last warband limped along until October before sickness finally took out too many to deal with the post-game zombie swarm.
>>96326388
For the really expensive stuff I evaluate whether I actually want it, or just "have to" get it because someone is playing. Especially because it can take an entire season to build out some stuff. You can get a lot of mileage out of a quick-ass cardboard boat proxy for the handful of scenarios that actually involve one
>>96321876
>have ~60 models
Clash of Katanas is your upper end right now. Solid rule-set, uses a mix of command points based on your choice of leaders and exhaustion mechanics. Punishes the hell out of overcommitting units. It also doesn't break with 2:1 ratios of missile troops to foot, unlike a lot of games. Ashigaru can be some of your minor leaders, so you don't need to waste all the sams on command. It models
>great troops, shitty commander
and
>crippled genius tactician
very well.
Ronin is tight as fuck. Converting the lists to En Garde isn't hard. It runs ~5-15 models per side, hard limits on missile troops. For both Ronin and Clash, grabbing one of the sets like Unlikely Allies or some Kensei stuff to add some characters to your collection will diversify things a lot. Lead Adventure's "Adventures in the Far East" subforum has a lot of excellent terrain inspiration and some tutorials that survived The Great Photobucket Purge. A couple people just did big threads about jidaigeki movie village sets.
Erewhon is a great game but it requires ~40-50 models per side before it starts getting interesting. 30 models is scraping together 4 units and a naked leader. If you do wind up wanting to expand to that point, splitting a couple Fireforge boxes of mounted and foot sams, one of melee ashigaru, and a few mages and monsters will get you there.