Questions & Clarifications for a wizard/Cleric Multi class.

So I'm playing a wizard and I'm planning to Multi class into cleric my next level so my class/lvl will be as follows;

Scribe Wizard 4 Knowledge Cleric 1

This means my spell slots will be, 4 lvl ones, 3 lvl twos, and 2 lvl threes.

My question are, am I able to copy spells of 3rd level into my book since I can cast lvl 3 spells, and can I prepare cleric spells up to the level I can cast as well?