can't decide on a motherboart

Hello
I am trying to build myself a new computer, and, as follows, i will use the following configuration:
1) CPU: AMD Athon X2 4800+, Brisbane ADO4800DDBOX
2) COOL:Thermaltake CL-P0371
3) VGA: Gigabyte NX86T256D || NX86T256H [the best silent video board that occupies only one slot in the case]
4) RAM: A-Data 2GB PC2-8000 Vitesta Extreme Edition
5) PSU: Fortron Blue Storm 400
6) HDD: Seagate Barracuda ST3320820AS (already bought)
7) Case:Antec Solo (already bought)

But I seem to have trouble choosing the right motherboard. But I have 2 finalists with pluses and minuses:
1) K9N SLI Platinum (rev 1.2)
+ 1 PCIX 16x ( NON-SLI) / 1 PCIX 8x;
+ LPT
+heatpipe (only in the 1.2 rev)
- the 1.2 rev version is very new. I couldn't find any reviews. There might be another problem, as i will order it over the net: i might order rev 1.2 and recieve rev1.1

2) Asus M2N-SLI Deluxe
+1 PCIX@16X, 1 PCIX@8x
-optional LPT
+heatpipe cooling system
+AI NAP
- very picky with the memory

So, I must ask you the following questions:
a) None of the manufacturers have my chosen memory in their compatibility lists. Does anybody have / have seen the M2N-SLI Deluxe or K9N SLI Platinum and A-Data Vitesta ?

b) could I use the memory at 1000Mhz without OC-ing the CPU ? (in the bios the maximum allowed memory frequency ist 800Mhz, and I've heard that a highet memory frequency really counts as performance with a AMD CPU)
as putea folosi memoria la 1000Mhz fara sa fac OC la procesor ? (in biosul ambelor placi frecventa maxima a memoriei este de 800Mhz)
c) Is there an application like AI NAP for the rest of the motherboards (I find it very usefull)

Thank you in advance