Cash money should be treated separately than sweat equity. There are practical reasons for this namely that sweat equity should always be granted in conjunction with a vesting agreement (standard in tech is 4 year but in other sectors, 3 is often the standard) but that cash money should not be subjected to vesting. Typically, if you're at the idea stage, the valuation of the actual cash going in (again for software) is anywhere between $300,000 and $1m (pre-money). If you're operating in any other type of industry, valuations would be much lower at the earliest stage.

The best way to calculate sweat equity (in my experience) is to use this calculator as a guide: http://foundrs.com/.

If you message me privately (via Clarity) with some more info on what the business is, I can tell you whether I would be helpful to you in a call.