Froget about replacing the chainring, on cheap bikes this usually means changing the whole crankset too as they dont come apart or they are non standard sized.
What kind of gears does it have on the rear? if it is normal cassette/derailieur like a mountain bike. Just change this. Count how many teeth are on each cog, and then go buy a new casette with less teeth on each cog.
Will cost you £15 or so. But you may need a new chain too if you are beng perfectionist (they are supposed to be replaced together) while will be about £6 more.
With bikes, dont get caught up worrying about these sorts of expenses. Think about how much youd be paying for either Oyster cards or parking/fuel/insurance/tax for a car. Which is depreciating in value every day.
Im ok, just bought the same £5 belt as you. Really impressed with the quality actually. Im gonna get a leather one too, but this is good for now.
In terms of lifts, cannot really give an accurate answer, I have severe tendinitis in my hamstring (hurts to walk) and have just started using lifting shoes. So have deloaded a bit to give hammies a break and to get used to the shoes.
I hope you werent asking to purely take the piss. No matter how low my lifts are, bodybuilding is still not a sport. It is brutally challenging, requires lots of dedication and good genetics, but not a sport.
The same way I would not say I take part in the sport of weightlifting, because I dont. I just train with weights to get stronger.
If you werent writing to give me a dig/be a prick, then ill be happy to share some stats.