You can absolutely brew with a 30a panel. I went 50a to have the option to do back to back batches, but I bet I do maybe one or two every so often and realize 50a was hugely unnecessary. The wiring work for either way nearly the same in price though, so there's that.
You could supply yourself with an induction setup using the Avantco IC 1800s, which run off standard 110v. BYO magazine shows that full boils were possible on such a setup. I thought there was a brew controller that also allowed for 110v brewing, but I could be very wrong.
One thing mentioned by @ArcLight was a pump. Do you have a pump? If you build or buy a brew stand then would it be single tier? If so, a pump would be hugely helpful and basically necessary.
A nice stand with the pump(s) on casters, you can wheel in and out and keep your rig set up for the most part for every brew day.
Bought a pump a while back. Forgot to buy the fittings, etc so it has been a expensive paperweight for a while. Have been considering building a stand (everything I have is gravity fed and kind of pecariously stacked when I do so), and was thinking of making a wooden 2 tier with the MLT higher than the burner which would be used for the HLT/BK.
I vote for a DIY stand. $2k is about the right amount for everything. Can you weld? If so, perfect. If not, building a stand is a great way to learn.
You'll need bulkheads, hoses, quick disconnects, valves, a pump or two. I bought 50' of mild steel from a salvage company for $100, borrowed a welder, and went at it. I bought my fittings from bobbyM at brewhardware.com.
Like above. Have been considering a stand. I have access to an old stick welder and have a tenant who is a steamfitter and would be happy to help teach me to weld.
where do you want to end up. you could upgrade the size of your mashtun. refresh all your kettles. build a stand. get more bling (go stainless) get pumps. you could also consolidate your system and move towards a BIAB solution that shortens your brew day and simplifies your life.
the real questions is where do you want to end up?
personally I have a bunch of glass carboys. 6 gallon, 5 gallon and 3 gallon. I am acquiring some SS fermentors from the Chapman kickstarter and I am happy with this but think the stackable SS Brewtech fermenters are pretty sweet.
The where I want to go is the real question. My current system works for me and makes solid beer.
The MLT is only a 10 Gal round cooler and since I started 10 gallon batches, I have been pushing it on mashes.
The HLT is my old 15 gallon BK which I replaced with an overkill 25 gallon stainless pot (found it at a great price <$100 after all was said and done).
A stand would make life easier as I was balancing my MLT on an inverted 1/2 sankey and things lined up weirdly. Have since moved the MLT to a workbench and things are better though not perfect. Would like the rig to be movable
A fermenter refresh is needed. This is why I started looking into conicals, well that and for the bling aspect.
Going electric could be nice for the wintertime, I like being outdoors-able for when weather is nice though. Maybe some longer cables would be needed if I go this route.
Ugly does not much matter, the bling is nice, but I am not averse to DIY so long as it is safe, and not cost prohibitive. If I can buy it better and at a cheaper price you know I will do so.