Hi Kingoftheday,
I just wanted to chime-in here and state that we (Meraki) do not have any official tools or solutions for a configuration migration like this and as a result you are using these third-party tools and utilities at your own risk.
That being said, we try to make the configuration of the MX platform to be quite simple and straightforward. As long as you have a high-level understanding of the ASA's current configuration, you should be able to adapt this to the Meraki MX platform fairly quickly and easily.
If you haven't done so already, be sure to read through our "MX Firewall Settings" knowledge-base article to get a full understanding of the configuration options available on the MX platform. You may also find the use of "Policy/Network Objects" to help streamline the configuration of your firewall rules. Additionally, since you mentioned DHCP services being enabled on some VLANs/subnets, I'll also share our "DHCP Services" KB.
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