Applying excise under limit

I own a small manufacturing company in Gujarat. Our turnover for the current year will be around 65-70L. We are working mostly with big clients in textile & an automobile manufacturer. Most of them are exciseable units and take CENVAT benefit. 

Can I apply Central Excise even if my turnover is less than 1.5Cr (or whatever is the limit) ? Can I take advantage of CENVAT and save money on the raw materials purchased ?

Thanks