i have bought the grains and hops as a kit here in the uk.

would i need to adapt it for a biab brew..it will be my 1st attempt,

these amounts are supposed to be for 40 pints
how much water will i need to mash with, i have a 76l pot on gas,
Ingredients
Amount Item Type % or IBU
5.45 kg Lager Malt or Lower Colour Maris Otter These are the grains that need mashing
0.45 kg Light Caramel/Crystal Malt - 40L
30.00 gm Northern Brewer (60 min) Hops 38.7 IBU
Thirty grams of Northern brewer hops go into the wort as soon as it starts to boil. 38.7 IBU is the amount of bitterness the hops add to the wort.
30.00 gm Cascade (10 min) Hops 5.0 IBU
Thirty grams of Cascade hops are added to the boil 10 minutes before the end
70.00 gm Cascade (1 min) Hops 9.7 IBU Seventy grams of Cascade hops are added to the boil with just 1 minute to go
1 Pkgs SafAle US-05 Yeast This is the yeast used to ferment the beer. Different yeast produces different flavour in the beer. US-05 allows the flavour of the hops to shine through
Beer Profile
Measured Original Gravity: 1.053 SG The gravity shows the amount of fermentable sugar in the beer. Here it is measured before the yeast is added
Measured Final Gravity: 1.010 SG This is the gravity of the beer after the ferment. A simple calculation allows the alcohol percentage to be worked out
Actual Alcohol by Vol: 5.60 %
Bitterness: 53.4 IBU Different syles of beer have different amonts of bitterness. This beer is quite bitter but correct for the style
Est Color: 6.2 SRM SRM is a unit to measure colour, its the same as the EBC rating you will see next to the malts for sale. This is a very pale ale
many thanx in advance for your input,