#challapradyumna better to be safe than sorry with the SMPS, also OP might add a decent graphics card later down the line and more hard drives so I think he is fine with a slightly larger capacity SMPS.
Also on your problem the GeForce 8400, Sire is your model cooled actively OR passively, also this might be a manufacturing defect, try to remove your card from your setup and observe if the heat-sink is sitting flush with the GPU chip, my MSi HD 5770 was a victim of such crude machinations [there was a gap and the heat-sink and GPU chip weren't in contact], used to go upto ~ 105 degrees [died after 3 months RMA-ed].
IMO, the onboard HD2000 is as good as the 210 for learning, unless you are doing some gaming/professional stuff, etc.
Sorry the HD 2000 is a very poor IGP system, if you are running applications like Autodesk MAYA OR Adobe Photoshop, prepare for long lags and the panning of the subjects in the MAYA view-ports coincides with massive lag and graphical artifacts [other view-port display is garbled, gymbal (that tri-arrow thingy) gets corrupted]. In my opinion OP is better of with a basic display adapter [from nVidia preferable].
UPS is overpriced. I recently purchased 600VA UPS for 1.8k (ahh, don't remember the brand but it was the best. I know that brand but can't rememorize it :/)
APC Back-UPS RS-600VA IN in Delhi costs ~ 1850/- [not inclusive taxes], in Bangalore you get a 550VA model for the same price, so I think it depends on the state / city Sire where you purchase a product.
Hope this helps, Sire(s).Cheers!!