As far as what's better than the i7-2630qm there's the i7-2670qm and i7-2675qm. Both those CPU max out to 3.1GHz compared to 2.9GHz. The i7-2675qm supports up to 32GB of RAM instead of 16GB.
Assuming the Acer can support the i7-2670qm, then you must decide if spending approximately $340 - $380 is worth another 200MHz. Anything more than 8GB of RAM is a waste of money unless you use some RAM intensive applications like large databases and Photoshop.