Are these including your future plans or u buying all right now??
D5100+kit = 30k
Nikon AFS 70-300 VR = 27k (As u mentioned)
Nikon AFS 50mm 1.8G = 11.8k
Lowpro prorunner 200 AW = 3k
Memory card = 1.5k
total spending will be around 64k
Lowpro AW200 is great...its big and carry lots of stuff ....I bought it keeping my future requirement in mind (300f4)
it have nice padded straps and rain cover is superb
just for your reference i am putting my bags picture again
*farm8.staticflickr.com/7184/6968682389_87a90ee24b_z.jpg
Lowepro Pro Runner 200AW by sujoyp, on Flickr
it can also fit in a sigma 150-500 size lens attached with camera