This is only my opinion, but...
Are you prepared to not ever eat anything that you like, for the rest of your life? Are sweets going to be off limits for good?
Take it from someone who has lost a lot of weight and gained it back. Every diet before has been deprivation, severely limiting what I allowed myself to eat. I, like you would try to make everything "healthier" with applesauce and sugar substitutes, only to have a treat that was less than stellar (APPLESAUCE DOES NOT EQUAL OIL!), so even though I had just consumed a healthier treat, I still felt deprived. You know what? I lost a bunch of weight, but when I reached my goal, it started slowly coming back, because I couldn't live that way for the rest of my life.
I am in the process of losing weight again, I have lost 55 lbs. since mid january. I decided early on that I would not deprive myself. 80% of the time I eat what I should, try to keep everything in check, but not micromanage calories. 20% of the time I give myself some freedom, this is where special events can fit in, dinners out can fit in, and ice cream craving can fit in.
I love to bake, but only bake when we are having company, or going to someone's house. I don't want leftovers hanging around. I bake with butter, oil, real sugar. When I do have a dessert, I want it to be great since I don't eat this sort of thing every day. For me it is all about balance. I hope the weight stays off this time.
This isn't meant to be a lecture, you are free to do what you want, it was meant to give a little advise from someone who has lost large amounts of weight twice and gained it back.