Make your own betting bot
 

Try robobet.com.au
you can make your own betfair bot. back all the favs automatically. no codinig required

Come in spinner.
After looking at the website, backing every fav is 1 simple option.

Will it allow me to lay SP for different amounts depending on the price 1 minute from jump?

You'd have to set a different rule for each stake amount and use 'if price less than'
e.g. rule 1 - if price is less than $1.10 then lay $100 a minute before the race
rule 2 - if price is less than $1.20 then lay $50 ...

need to work on the stakes though, as multiple rules will run if its less than the first rule.

New features constantly being added which includes the option of setting a price range, which will allow you to set a different stake for different price ranges.