First prime MFT lens suggestions

I bought the E-PL1 with Oly MFT 14-42 II kit lens first, adapters for my 24mm 2.8, 50mm Canon 1.8, 135mm 2.8, and 70-210mm Canon FD lenses second, Then yesterday my Oly 40-150 MFT 4-5.6 arrived.

My investment, so far, has been $100 the PL1 with kit lens, and another $30 for two adapters, and $100 for the MFT 40-150mm, and a little more for lens filters and other goodies to go with my little Pen camera and it's lenses. I'm as happy as a kid under a Christmas tree with my gear, I'm learning the hobby, taking several hundred photos a week, and so far I'm having a lot of fun.

In due time, I'll likely upgrade to the latest Oly MFT camera. But I think it's starting to be time to think about getting some fast native MFT prime lenses to advance my new hobby.

The ability to shoot indoors without flash at club meetings what I think comes next. I've tried that with my Canon Nifty Fifty on an adapter, and the problem is I've not got the skills to quickly and reliably focus the lens, yet.

The advice columns will usually advise that the first lens after the standard tele kit lens and the standard kit zoom lens should be the 25mm 1.7 Pany or 25mm Oly 1.8.

But what about the 45mm Oly or similar Pany as full portrait lens?

With any of these native prime MFT lenses I'll not spend much in real terms, but it will exceed the entire cost of my entire PL-1 outfit so far, in buying just one new lens.

I want to buy something I'll likely use, and keep forever.

Any help would be very much appreciated.