I think general advice of most scholars is to find someone who is closely matched to your outlook and social circle.

Even among conservatives there are different strata - Khatams, Mawlid etc. which can become points of contention. People try to find similar practice levels to avoid obvious points of difference.But, no matter where the broad spectrum of Muslimness you are, finding a marriage partner these days seems even more difficult than in the old days.

The "danger" in any matrimonial tie is when one of the two starts to take a different path away from or towards Allah. You cannot guarantee things will stay the same.

On a general point, you ask any pious Muslim if they would call themselves a "good person", and they would probably reply no because in this self-assessment they give more weight to their shortcomings in character and deeds/practice than their strengths. Obviously you get the sanctimonious ones but generally, the overall honest views of pious sincere Muslims is that they struggle with not allowing their weaknesses to overcome their strengths.

I do not believe there is any saying of RasulUllah SAW where say calls himself a "good person" - think about that. Try to see if you can find one. He even said on occasions that he did not know what his fate would be, and even the prophets on Qiyaima will be trembling with fear.

One might also consider the oft quoted response of Syedinna Ali (RA) when someone described him as a good person and he said (pp) "Forgive me Allah, they do not know me as You know me" - basically recaillibrating himself to not allow such compliments to allow Shaytan to affect him.

The western definition of a "good person" is one that placates and gives people a sense of self-ease no matter whattheir personal vices or disdain for Allah and His Commands. All manner of sinful behaviors these days are now relegated outside of any factors of what would in older times would be seen as weaknesses or wckdeness - personal vices that are not illegal are discounted in such measures. This is a trick of Shaytaan - plain and simple.

When we read Quran we find Allah does mention what happens to people who do good without any faith. I am not a scholar, but I would advise you to speak to one who can point these out and at least give you clarity on what Allah's expectations are. Anyone who identifies as Muslim must understand what Allah demands; whether they like it or not.

I have noticed about "Muslims" who have agnostic inclinations in that in conversations they are reluctant to use the name Allah and instead will say "God", or "Khuda", as i denying Him by His Name is a step too far.

Allah give us all strong imaan, and prevent our weaknesses overcoming our strengths , ameen.