I'll try to give you a couple of thoughts to consider, because it sounds like you're going to make a move without a lot of testing:
First of all, boots do work better today, and give a generally more upright stance which among other things keeps your quads from getting tired. Modern boots provide more energy transfer into the ski - fore/aft and torsionally, and this helps you make better use of your modern skis. Fit is key, as there are a lot of models that work best for different foot shapes - so I would not buy boots that you haven't been able to try on. Today everyone starts with a shell fit to get the size/length right, and you can search that here on this site, but effectively your bare foot in the bare shell with your toes brushing the front should not allow more than 2 fingers of free space behind your heel. A bootfitter is invaluable in helping you find the model boot for your foot/calf shape. Maybe this comes next year when you can better afford it, but keep in mind that fit is a lot more important than price - in other words, boots that don't fit well aren't worth paying one penny for and will never be a "good deal".
Let's talk skis, since that's what it sounds like you're going to buy now. If you're still skiing with your skis very close together you will not want too radical a sidecut ski as this will not work well with your stance, which you will probably be slowly widening over time but don't cripple yourself up front with a radical sidecut (small radius) as you'll be tripping over your inside edges. Something along the lines of a 17 - 20 meter radius sidecut would be as tight as you would want for a couple years. This is still a very tight sidecut compared to what you're on now, but will be manageable.
You said you like moguls and spend the bulk of your time there so make sure you consider skis that are pretty soft lengthwise. A reasonable length will probably end up somewhere between 170 and 180cm. The sort of radius I suggested above in this length that's reasonably soft lengthwise with a 1 degree bottom edge bevel and a 2 degree side edge bevel (no such thing as flat filing shaped skis) will work well for moguls. Todays skis get stiffer torsionally as you move up through the product line to the skis geared more to advanced and expert skiers - which are fine for you considering you are very experienced.
Skis have also been growing wider underfoot over the years and will look starkly different from your pencil thin skis. On the one hand you shouldn't make too radical a change at once so I would tend to suggest a relatively narrow ~78mm underfoot, but on the other your region really encourages you to consider a wider ski for its soft snow conditions and while a ~78mm wide ski will be a dramatic positive shift from what you're used to, an ~84mm wide ski today will do as much, hold on hardpack about as well, and be even more fun in new snow and for the tree skiing you sometimes do. Only a few years ago a "mid-fat" ski was ~75mm wide, but that has grown to even ~90mm wide today. These will all be a huge improvement over what you have now, and the "best" will vary subjectively for the specific snow/terrain conditions at hand.
Hope these thoughts help!