it would take waaay less than a year, especially if you buy silk. I know bladers lvl slow, but still.

It's not too late to change now, so its your choice. Bladers are great tankers, but don't do much dmg. They aren't exactly geared to be the 1v1 killing machines, especially against glaivers, but they do very well at 1v1 and excel at tanking in guild / job wars.