Mentioning amounts in dollars just doesn't sound right on a Bitcoin forum. May I suggest using an image, where you set the amount in dollars, and it shows Bitcoins. Example: $1000=.
The down side is that it gives weird looking amounts, but it's updated on each reload.

My 5 Bitcoin total was an estimate summing up my portfolio. I can't get an exact amount of how much I've held at once either, as several funds (0.1, 0.65 and 1.25) were overlapping. I think a concervative estimage would be 1.5 BTC in December 2016, worth around $1350 back then. Looking further on my portfolio, to my surprise 0.28518 Bitcoin escrowed in November 2017 was worth more ($2012.89) when I received it, and is currently worth . Full disclosure: I'm still holding funds for something else than a campaign.

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The maximum number of participants probably needs clarification too, it now ranges from 20 to 4k+. I assume 20 is for signature campaigns and 4k+ for social media.