How long does it take to process a tourist visa at the Thai Embassy in Phnom Penh, and what are the requirements?

The four days processing at the Thai Embassy in Phnom Penh (60 day tourist visa)... is this four business days? Eg if we apply on a Friday, do we need to allow the following Monday, Tuesday, Wednesday to get it complete?

Also, the required info, is it

- Proof of money in the bank (20 000 THB)

- Onward ticket from Thailand after visa expires (how does this work if you plan on getting the 30 day extension?)

- Travel insurance

- Proof of accomodation (is it safe to show a 12 month lease or better not to indicate something so longterm?)

- Extra passport photos

- Photocopies of passports