VPS Capacity

This is my first post here, though I've been an occasional reader for a long time.

I currently have a VPS at Godaddy, plus shared hosting at Godaddy, 1and1, and Namecheap.

I'm very unhappy with Godaddy, and not terribly thrilled with 1and1. Also, I want to consolidate my sites.

I have appx. 25 sites, with plans for another 20-25. Most are either WP blogs, or static informational sites (using Xsitepro). Most are low-volume (appx. 100 visitors/day). A few, maybe 5, are low-medium volume (a few hundred visitors/day).

The sites are pretty basic, mostly Adsense, affiliate sales, and the like. No streaming anything except the occasional video clip.

I'm considering Futurehost's current offer for 50% off lifetime on their Titanium package w/ cPanel. This provides 1Gb RAM. Any reason to think this would not be adequate for my current and future plans (currently appx. 25 sites, going up to 50 within 12 months)?

I'm pretty sure bandwidth will be way more than adequate, I'm just wondering if a 1Gb VPS will be enough for all my sites.