To follow up Nigel’s post, there are 2 tracks to follow from sn. Either 282 first, so 282 with your hicap to power it, using sn as power amp before swapping sn for 250. Or 250 first with your sn plus hicap as preamp before swapping sn for 282. Both give you an interim stage so you don’t have to get to 282/250 in a single step. And each has their pros and cons.
The better preamp first ie 282 before 250 might be the more sensible/performant route.
There are cables and hifi furniture to consider as well, perhaps these are best looking at first. Plus the obvious question of your sources.