I decided I want my first breeding project to be breeding a max stat pet. What is the max number for each stat? Also if I am understanding breeding guides right, say I breed a male with 1000 base HP to a female with 1000 base hp. The kid would have 1000 base as well correct? If I bred a 1000 base HP to a 700 base HP the kid could have a HP between 700 to 1k right? Just wanting to make sure I am understanding before I start my process.

yes, the stats of the offspring will be anywhere between the stats of the parents (though the final stats when they hit adolescence will be whatever they got at egg generation plus any bonuses from when they get hatched, and from any subsequent nurture bonuses)

Maximums:
HP: 2000
Mana: 200
Str/Int/Dex/Agi: 100

(> options on the hatch popup: "help egg hatch" = +20 HP, "let hatch on its own" = +1 to one of str/int/dex/agi at random, "philter" = bonus from whatever philter was used
(Nurtures: 8 correct nurtures will boost whatever the lowest stat is (with HP comparing to the others using the two 'middle' digits- so 300hp = 30, 1200hp = 20 etc. Not sure if 1000 = 00 or = 100, probably = 00?)
Lowest stat gets +20 (hp) or +1 (Str/Int/Dex/Agi), unless all stats other than mana are maxed, at which point mana will get +1 for the nurtures)