Lostgar is a good deck, and this is a pretty nice article. Good job.
All I have to say is that Omastar isnt a very wise choice of a tech, it would only help in mirror matches and not much else..
Because of all the SP's around, it cant use its power against 50-60% of decks out there. Then, it cant use it against Vilegar alot of the time because you are trainer locked and cant lay down fossils, unless you have it out before your trainer locked, which will almost be never. It can help against decks like Kingdra, Machamp and maybe Donphan, but I dont think its worth at LEAST 3 spots in your deck. Its an interesting thought, but I personally dont think it will work.
I'm also a little skeptical about Gengar SF, you arent supposed to be focused on attacking, but rather hurling into darkness. Im just not sure if you should ever need to be trying to KO anything because from the LostGars Ive played against, you should only be doing one thing: trying to get 6 Pokemon in the Lost Zone
I liked the article and I hope people take some advice on the deck from you.