Grasshopper- stay within yourself and start with a simple path. Pigs get fat, hogs get slaughtered. And be careful about doing this at home- warmer temps wreak havoc on whites- protein ghosts and the like- unless you can cold stabilize, things can go awry.
BTW- oak and steel are your vessel choices, a dessert wine can be done in either. I’d taste what others have been doing with the fruit from that place and use that as a starting point. But I believe that white wines (especially something sexy like Muscat) should have an oak regimine similar to Vermouth in a Martini- I like to pass the Vermouth bottle by the counter where the martini shaker is resting, and no closer. Keeping your stainless in the same room as oak barrels is enough. Good luck.
First the long version: Press fractions, grape type, brix harvested, lees program?, stem percentage, red or white, fining or filtering etc. will affect your finished barrel rate.
The short answer: expect under normal conditions to get approx 1000 pounds to one “FINISHED” barrel or 25 cases. That includes top up for the year.
Berry, that muscat will be awesome in steel. Oak would possibly hide the exotic bits or lie. As for cold stabalizing, and where this may take place I seriously suggest you contact a few local wineries and see if they may be interested in having someone shade a tiny corner of their facility.
You need cleanliness, stable space, room for water to be sprayed when cleaning, low variation of temps etc.