The A7V is a great mortherboard, however, if you want it to support 133mhz FSB then I would get the A7V with the KT133A chipset. That is the only one (Asus board) that will support 133mhz FSB right now. It does not support DDR memory though. The chipset's right now are not refined enough to make efficient use of DDR memory. If you are going to buy a board right now and can't wait then this is the board of choice. Also DDR memory is a little expensive right now.......Not to mention motherboards that support DDR memory.
As far as a processor I read an article from Tom's sight that says the old Duron and Thunderbird processors (maybe just the Thunderbird)will run at 133mhz FSB with no problem. I'm not for certain though. If you are wanting to overclock I would go with the Duron. You get more bang for the buck with the Duron. Because of the voltage needs of the Thunderbird it is not as overclocking friendly. It will overclock but not to the extent of the Duron (which costs much less). When overclocking, you are correct about the L1 bridges (the dots). You need to connect them with a conductive pen or lead from a number 2 pencil. I would read a detailed process on how to do this if you have never done it before. It can be very easy to end up with a $80.00 paper weight.
The memory type IS important. Duron's and Thunderbirds are picky. I would go with Kingston, or Corsair.....it won't matter as long as it is good quality (not generic). Get PC133 (CAS2 would be the best but CAS3 will work fine).
The Video card is pretty much going to depend on how much money you want to spend. The Geforce2 MX is a good performer for the money. I have a Hercules Prophet II MX. This is the best MX card available. You must get the retail version for this to be true though. The memory speed is slower on the OEM version of this card. The OEM has a slower clock speed and the memory is 6ns (giving you 166mhz memory speed). The Retail has 5ns memory (giving you 183mhz memory speed). The processor (on the retail) is 175, I'm not sure about the OEM......but the memory speed is more important than the processor on the card. I know the retail version will overclock to around 200 (processor and memory), without any extra cooling. With cooling I have seen it get to an astounding 225mhz. This would be an extreme case though. I would expect around 200 out of it though. The retail version is around $150.00 Hope this helps.