Have a look.
The more you see the more you'll get a feel for.
I spent 18 months travelling from Reading to Lancashire and saw dozens of boats.
Kept comparing them to the 3rd boat I had seen.
Eventually the penny dropped and that was the one I now live on!
When the right one appears you'll know.
As Betty B. says, I bought up North[to me] & low loaded down to Caversham.
About 15-20% difference in price made the road haulage seem a bargain at the time.
As an aside if no inverter fitted allow about £2k for a decent 2500-3000w unit with all that kit.
Then the batteries... then the solar... etc, etc,etc.