There's nothing wrong with the one you've got.
I completely agree with this, you have got a brilliant starting point to have a brilliant bike but I think you need to work out what to do before buying anything else.
1. Sell the frame on and take a potential hit on not getting the same value that you paid for it
2. Buy the kit to turn it in to a usable bike, which will include as a minimum Shimano 105 but preferably Ultegra groupset (lets say £420 as Ian points out from Merlin Cycles), handlebars (£30), bar tape (£15), Stem (£20), cables (£30), saddle (£50), wheels (£100 min), tyres (£40), inner tubes (£10). So to get this bike on the road you are looking at £715 which is not a sum to be sniffed at. I said that I thought you had bitten off more than you could chew because I didn't think you appreciated what you need to buy or how to do it, and you may have other complications with retro fitting mechanical shift on a frame previously used for electronic shift. Also I don't know what condition the steerer is in and whether it has been cut to a length suitable for you. You might also need to pay for LBS labour if you get stuck with fitting any of the bits.
As you can see there is a fair bit to it if you have not done anything with a road bike before, but if you have the money then go for it, you will end up with a cracker.
What was given as the reason for sale of the frame BTW, is there any sort of damage to it?