I like it.

He's obviously trying to control the pot and is unsure whether he has the best hand.

Whenever I detect what I think is a "feeler bet" I like to launch some misinformation back at 'em whenever I can.

He would've probably bet a little more with a monster because he needs the pot to be 250+ dollars on the river so he can stack you. Also I imagine he'd lead the flop with a set a lot of the time.