Tables can be quite different if you plan on using different figures and different rods and different pins/fastener and different handles. I believe tornado/dynamo used to be different manufacturers before a merger so the engineering will have differences. For your instance, the rod height from playfield may be a bit different from dynamo to tornado as the men are are visually quite different. The dynamo fastener was a sloppy bolt not a tight sprung pin which you just discovered with those cheap rods. Believe it or not, a great deal of thought and evolution has gone into tournament tables and relationships between things on the table to make for a more nuanced refined game. Unfortunately, one must both measure and guess a bit to match different table parts.
Specifically related to your upgrade idea, toe design has evolved over the years related to the contact points and grip texture for improved control and release of a specifically sized and textured ball both front and rear of the figure's toe.
If I was you... I would mount a sample tornado figure on your dynamo 5/8 rod and measure the number of dimes and nickles stacked that can just slide under the toe at its lowest point... I believe it is about 4dimes or 3dimes and a nickle clearance gap you are looking for. There is some tolerance due to bearing wear, but it must be quite close to this or the game will be awkward both to practice and when you move to a real table.
The tornado commercial rod sets are really really good but expensive. I think they are worth it especially the forward 3 rod. You will have to do the math on a total set but it might be a good option to load tornado rods handles and men on that dynamo table. Other concerns would be playfield texture and goal width; it needs to be close to a matte formica not too smooth. If it works you have a great practice table and the new rods can be transferred to a used tornado table that has the older chrome rods when you find one. The swap will make your dynamo easier to sell to another rookie or hack as well. Practice tables are important, but it is not essential to have the latest table to work on basic things just something that feels similar.
Let me know if that dynamo comes close with tornado rods; I'd like to build a sloped corner dynamo tornado hybrid myself.
JW