All I can say is from my experience.
Lupron is evil. It made me utterly miserable, a raging cranky butt and the hot flashes were worse then the real surgical menopause I went through. I have met very few people who had success without intense side effects. The add back therepy is progesterin, usually in synthetic form. If you do go this route, talk to a compounding pharm and look at bio-identical add-backs.
There are not a lot of cures or treatments for endo other then hormone therepy. You may want to talk to your OB about setting up an appointment with a compouding pharmacist. They can do wonders for hormone control and do it will much more body friendly hormones. Mine has saved my sanity since I had everything removed and went into surgical menopause.
Some tips for handling endo and adeno.
Avoid all phytoestrogen plants.
Food with soya, milk with hormones in it
Watch the meat you eat, it has a lot of hormones in it.
Find out about the mirena coil. It is a wonder for some women because the low does progestorin it puts in your uterus but be warned, if they suspect you have adenometriosis it will make it worse. (Adeno is endo but it grows within the muscles of the uterus)
Best of luck to you.