Aussiedistiller, Home Distilling, Moonshine, Home Brew

Hello there

Working with a 200L fermenter that I will be mashing in too. Aiming for 3L water per 1kg grain.
25kg gladfeilds distillers malt and 20kg unmalted feed barley so a 135L ish final volume for that 3L water to 1kg barley ratio.

Going to gelatinise the 20kg unmalted barley in 60L of boiling water in my 200L mash tun/fermenter, stir briskly with drill and let sit for an hour.

My question is this:
What temperature of my strike water will I need to hit a target of 65 degrees for the addition of my distillers malt (assuming grain temp of 20 - 22 degrees)?

Have been trying with brewers friend calculator but it just isn't made for an Irish whisky mash....

Thats calculator I used to use. There are calculators to work out equipment loss also.
I found pouring hot water into mash tun/fermenter and stirring drops it fastest.. careful about heat loss especially when adding boiling water, pouring it into tun.

For prosterity:
I ended up just chucking in in 2 lots (only have a 50L water kettle boiler i can easily emty from) of 40L of rolling boil water and mixing the unmalted cracked barley with a drill for 10 mins on each addition.

Added 40L of 70 degree water into the mash and milled my dsitillers grain into my mash tun mixing as i went.

Ended up with a grav at 1065 which i was very happy with considering the ram shackle approach.
Will be a while before i can get back to it and start the ardous process of filtering the grain off and stripping but itll be worth it :D