Currently have an S bar Brompton and I find it too aggressive a position for me. I would like the M bar instead. From what I have read on this forum. I have a few choices.

1. Purchase new stem, handlebars, lengthen the cables and housing. I can do the work myself. Is there anything else I need to know or purchase and does anybody know the approximate cost of these parts.

2. Purchase the Aber Hallo stem and raise my bars up 2", which is 1" less than the M bar would be. S bar is 37 inches, M bars 40" from the ground. Could I put a small riser bar on the Aber Hallo and have it not affect the fold? Has anyone done this?

3. Sell the Brompton I have now and purchase the one I need. (My Brompton has maybe 100 kilometers on it at best, 2012 model)

4. Try and find a trade with someone, but it would have to be orange and I am never keen on used parts (I prefer new items).

Thoughts?