Oh and with regard to hosting, if you cannot afford/justify dedicated (and maybe consider options like OVH if you are skilled enough to self-manage) stay the heck away from Virtuozzo (aka Parallels) VPS based hosting providers. VZ simply cannot regulate disk load properly, no matter what the host claims. Bad neighbors on the same node will completely ruin your life.

Instead, if you must use VPS, look for Xen or KVM based hosts. Xen is much more heavily regulated and you will have a much smoother time, even with "bad neighbors".

If you have no other options, OVH has low-cost entry level dedicated with SSD which will allow you to get away with even the worst behaving plugins. But you absolutely must know what you are doing to use them. Strangely there isn't much competition to their pricing yet from other hosts, but hopefully soon.