Time from 30/50 to 50/50?

I've been thinking of coming back to GW1 to finish up my HoM, but I'm wondering how long that would take. I'm currently 30/50, but the last 20 points look like they're probably the most difficult, so I'm not sure how far I'm willing to go for them.
Can anyone who has done it say how long the last 20 points take compared to the first 30?

depends on what you have left to get,
If you have to get things like: leg vanquisher, cartographer, (missions), chest runner, wisdom etc....they could take a while,
if you are missing cash pieces like: armor, minipets, weapons, hero armor---all it takes it money and finding someone who has them (or getting them yourself).

I had 49/50 since the calculator came out, finally got my last point around halloween (still havent finished chest running or id'ing).