Is there anything fundamentally wrong with this bike? Looks low to mid range to me but I don't know much. It's a bit small for me I think, hence the huge amount of seat post showing but it all works OK. It was free to me and it's been on my turbo. I have a road bike for exercise but want something for gentle trails and gravel, going to the shops, etc. and general lycra-less pootling about. Would something similar but bigger be OK? Don't really want to spend much so was thinking sell this and get something similar in my size.