Wow! A very good amount of information here to consider. I think I am going to start off with switching to two 6.5 gallon brew bucks at a time for the primary fermentation and rack to 5 gallon glass carboys to begin the process of increasing the amount of bulk aged batches especially if I plan on moving to real grape wines. My very first batch ever of Apple Cherry made from frozen concentrate about 8 weeks ago is already half gone with people asking me for more and a recently bottled batch of blackberry from homewinery looking and tasting better as time goes by. The way I see it if I primary 2 at a time each month then I should end up with at least 120 gallons after the first year in multiple stages. That would put me near needing twelve 5 gallon carboys at one time if max bulk aging is kept to 6 months.
Oh. And I don't plan on using kits.