I live at Senja Grand, which is just across the road from Senja Green. Actually I find that as you get to know the place better, it becomes quite convenient. You find out all the shortcuts etc.
I think the best blocks to live in will b those 2 blocks beside Senja Way. Fastest walk down to the bus stop with 190 (to go town) and also nearer to Senja LRT. Can get to the 190 bus stop in under 5 minutes if you know how to cut thru the HDB bloacks. It's also a bit safer, cos the other 2 blocks r beside the forest! Not sure whether they'll clear that plot of land when they start building.
BTW, for those who work in Orchard, Outram Park, Tanjong Pagar, it's better to get up earlier and catch a bus to work. 190 gets you to Orchard in 30 mins, Outram park in 50 mins when no jam. Tanjong Pagar ard 1 hr if you take 700 from the bus interchange. Take LRT/MRT need more den 1 hr... (T_T)