3 Monitors on MacPro and ATI Radeon HD5770 (VGA)

Current Setup: MacPro 5.1 (2010) with Logic 9 and ATI Radeon HD 5770 and 3x 24" Monitor (2 with DVI & VGA, 1 with VGA only)

does someone know if one or both of the following setups will work with 3 monitors?

1. Setup:
ATI DVI -> Monitor1 DVI (Single-Link)
ATI MiniDisplayPort - DVI Adpater -> Monitor2 DVI (Single-Link)
ATI MiniDisplayPort - VGA Adpater -> Monitor3 VGA

2. Setup:
ATI DVI - Monitor1 DVI (Single-Link)
ATI MiniDisplayPort - VGA Adpater -> Monitor2 VGA
ATI MiniDisplayPort - VGA Adpater -> Monitor3 VGA

could setup 1 be working, if only 1 adapter is active but VGA and not DVI.

i know to use 3 Monitors on a ATI Radeon HD 5770, Adapters must be active, such as the expensive Apple MiniDisplayPort - Dual Link DVI Adapter, which i don't want to buy and use.
MiniDisplayPort - VGA Adapters are active too. that's why i'm asking about those 2 setups above. to make sure, if one or both would work, so i can purchase 1 or 2 MiniDisplayPort - VGA adapter.

thanks for any help in advance.