If your battery terminal is getting hot, then it is sucking some large amount of juice. I'm guessing although that the battery terminal is tight.
You need to find if you've got a fundamental problem with your starter motor /solenoid somewhere. To prove this you need to measure the voltage at the starter motor as you turn the key to start. If it drops away by a large amount without any turning over, then the starter motor is bung or jammed or something.

Go back to what you previously had and try again.

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SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.

got it running today

Thanks to David (64cooper) he spotted the loose -ve wire after removing the battery

Battery is currently low voltage after cranking it

found the most silliest thing as well... when I replace the starter motor, I removed the coil and somehow the HT lead is not put in properly thats why its just cranking
I was more concenrating on battery, fuel pump and starter motor and ignored the basics to check

Good to hear it's running , as for the loose -ve wire , don't worry , we've all done similar at some stage and gone chasing what we thought was wrong and missed the obvious thing ...

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David, fuel pump seems working fine, I'll return your fuel pump early this week maybe tomorrow, I'll give you a call 1st though

Thanks again!

I've got 2 free wire slots on my -ve terminal should I put extra earthing points?