。
I hope our trip to China will be a fun one.
Literal
Our [attributive-の] China trip [subject-が] fun [attributive] thing become-[when-と] good-[wish-な].
The pattern ~といいな ('I hope / it'd be nice if X') is a common wish construction — literally 'if X, (it would be) good.' The な here is the exclamatory/monologic sentence-final particle, giving a wistful, hopeful tone. 僕等 (ぼくら) is an alternative spelling of 僕ら using the kanji 等 ('et al.'), functioning as a plural marker.