Is your current sourcing structure set up to work in different scenarios (best/worst case) during your expansion into Germany?
Do the lead times and capacities allow for your campaign to succeed?

Analyzing your supply chain for potential bottlenecks beforehand, significantly reduces the need for expensive interventions during your campaign.

Do your employees have the tools and abilities to deal with additional customers from a different region?

Training and informing your employees about the growth strategy, and how they are an important part of it, is essential for the motivation and commitment in your team. Having some external support for difficulties can help your team to adapt to the new situation quicker and more confident.

Do you either have a fixed budget to achieve the maximum of success? Or do you have a fixed target to reach by most effectively using your financial ressources?
How important is the effect of expansion (additional stock, bound capital, turnover rate, cashflow) for your company and your investors?

Finding the right balance between having a flexible supply chain and cost effective sourcing is a determining factor for picking the best strategy and will have a significant impact on above mentioned metrics.