I would only like references to Suikoden games it if it actually was a Suikoden game. Like a spin off or something. I'm just not quite sure why you want to tie it in with the Suikoverse when you're using very little content from the source material.
I mean if it's your own story, then you could have incidents that are inspired by Suikoden events, for example, if you like the idea of the queens of Falena using assassins against members of their own family, then you could come up with similar events occurring in your story, but using countries and characters you've created yourself and exploring the idea in a bit more depth and introducing entirely new ideas, then that would be great. Kind of like how the Elder Scrolls have cultures that are inspired by Romans and Vikings, but the games are not based directly upon Roman history or Norse myths. There's a lot of familiarity for people who are interested in those subjects, but the games still have their own identity.
I just think you'd be better off doing it like that. Stick to your own world and you can still use ideas from Suikoden, but also make up your own rules and not need to worry too much about researching the Suikoden games. You're more likely to piss Suikoden fans off if you do something inaccurate, but if it's your own world and your own rules, and you're just taking inspiration from the best bits of games and stories that you like, then nobody can tell you you're being inaccurate.