Bracknell train station parking busy times & price

I going to start commuting to between Bracknell and Waterloo a couple of times a week, and thinking I'd park at the station instead of bumming a lift or paying for a cab.

Does anyone know what time the car park tends to fill up?

Also trying to figure put what the cost might be for a all day stay, some time it could be 7am to 11pm. Would that fall into the £6.30 flat rate you think? Or get hit by 2 rates?

https://en.parkopedia.co.uk/parking/carpark/bracknell_station/rg12/bracknell/?arriving=202302112030&leaving=202302112230

Mon-Fri - All day Weekend £8.30 (Fri In after 10:30, Mon Out by 00:00) Flat Rate £4.00 (In after 10:30 Out by 00:00) Flat Rate £6.30 (in 00:00-10:30 Out by 00:00)