As things change everyday here this post is current at time of writing but who knows what the deal is in a month or two:
Business visa, you do not need to leave after 60 days can extend for 6 months. Currently it's possible to pay and renew it without leaving Indonesia when it ends. I don't know about switch to kitas.
I have been doing much research about visa agents and had dinner at The Man Shed Sanur the other night, the girl there is also a visa agent. Her prices are significantly lower than what I have paid I will share her details, if not allowed Mods can delete. She did say prices fell in last month due to competition and there is visa agents literally everywhere I go in the south:
Address: Easy Visa, Jl. Danau Toba No.14, Sanur, Kec. Denpasar Sel., Kota Denpasar, Bali 80228, Indonesia
Hours:
Closed ⋅ Opens 9AM Mon
Phone:
+62 821-4487-0477
Province:
Bali