On the surface, it is impossible to bid on this project. It's like asking "How long is a piece of string?".
But, I have mentored dozens of traders and I think that I can suggest something that will work. Please have a look at my profile and you will see that I have over 50 years experience with developing computerised trading systems, starting decades before MT4 even existed.
I propose to charge you $25 per hour to help you. My "help" will be by way of emails and you will find that I'm very quick to respond to emails. I would just keep track of the time that I spend and you would create a new milestone every time your $25 was used up.
It would typically take me five minutes to read and respond to an email, so you would get quite a few emails from me for $25.
Of course, we would start by you telling me what you want to do and how much you know already.
I look forward to hearing from you.