I'm pretty close to doing the same thing, but I hestitate because basically that will just mean Coinbase got an interest free loan from me, and the LTC are worth over twice as much now.
LTC. I have had 3 other buys/sells that went through normally, but one buy for approx $1k LTC @ ~$100 is stuck and my support request is sitting with no response. They don't respond to requests and so far haven't even acknowledged a backlog of pending buys, despite daily messages of various delays and outages. Could they be tying up customer funds on purpose?
After waiting for over a month now on my Coinbase purchase being stuck in Pending status, with absolutely no response from their Support, I'm getting tired of seeing Coinbase being seen as a leader in the Cryptoverse.