Hi Ria, you could just step up your game and start attempting very complex projects and forms. The output will go down and if you really push yourself you will likely have less making it all the way through in the beginning and new and different stuff to gift once ou master the new forms.
U could also start taking up other aspects of pottery like making your own glazes and maybe even dig/mix your own clay. Having the luxury of time and money can open up lots of interesting opportunities.
You guys are cruising along. That's a good book, we use a couple of the rutile glazes from that book. You might also check out digitalfire.com. I use their glaze software and the site is loaded with great info. Part of the subscription used to cover a couple hundred paged e-book which I remember as a nice primer.
Hey Mark, I was sued a couple of times over some pretty silly stuff in a 10 year non-pottery small business. Neither went the distance but both cost me 4 figures to defend until they went away. One had a relative who was an attorney and that one cost me the most to defend because the guy's uncle kept filing crap since it cost him nothing. That one was a new driver who claimed he injured his 'breast plate' stretching after he got out of his truck but before he actually did anything. We never did really understand why he came up with that and it was not real. The other was a customer who was making a ridiculous claim. This was over a 10 year period and although there was only a few of us in the early days the company did grow to twenty five or so employees and we had 1500 customers so yes we certainly had more exposure than someone selling pots on weekends. But with annual sales and pots going to stores I certainly wouldn't run it as a sole proprietorship. I just do the couple of pieces of extra paperwork myself so I don't pay accountants or attorneys to do anything so I have no ideal how much that would cost, my extra cost is a couple of hundred bucks a year.
I am absolutely certain that our two suits were not from legitimate issues but us just coming across people that wanted to get a quick settlement from us and move on. If you don't have anything of value (you rent and don't own any big dollar assets) then maybe a SP is OK.