But I do need my 2 SATAs. So it is going to be like 3 adapters (SATA spliter, SATA to MOLEX, MOLEX to 4pin CPU). Not only the cost will add up but it will add significant mess to my build compare to a nice clean APU board.
What i'd probablly do in that case is buy a molex to P4 adaptor and a sata splitter cable and then splice the two together to make a SATA to SATA+P4 adaptor. That way you avoid the need to butcher the PSU while only having one adaptors worth of wiring mess.
But ultimately it's up to you what is most important.
Come to think of it. The 4-pin of 20+4 ATX Power Adapter has +12V. Shouldn't there be an adapter that can turn it into the 4-pin CPU? There are many motherboards that can take just a 20 pin ATX power. It would be great if I can use the spare 4 pin for the CPU.