How will my course load be this summer?

These are the last upper div classes I need to graduate as an Environmental Econ & Policy (EEP) major at Cal. I’m planning on taking them all this summer (3 in Session A, 1 in Session C).

ECON N181 (Session A) International Trade Units: 4
ENVECON C101 (Session C) Environmental Economics Units: 4
ENVECON C115 (Session A) Modeling and Management of Biological Resources Units: 4
ESPM C167 (Session A) Environmental Health and Development Units: 4

I’m trying to find equivalent courses to the list below (so I can take 2 fewer classes at Cal and instead take them at an easier 4 yr institution to lessen my workload). Any upper div within the EEP dept at a different 4 yr university (meaning the class’s title doesn’t have to match up to the ones below) is equivalent to Cal’s EEP upper divs but I’ve had trouble finding any. Lmk if you have suggestions for upper divs at other 4 yrs universities.

ENVECON 140AC Economics of Race, Agriculture, and the Environment
ENVECON 141 Agricultural and Environmental Policy
ENVECON 142 Industrial Organization
ENVECON 143 Economics of Innovation and Intellectual Property
ENVECON 145 Health and Environmental Economic Policy
ENVECON 147 Regulation of Energy and the Environment
ENVECON C151 Economic Development (also ECON C171)
ENVECON 152 Advanced Topics in Development and International Trade
ENVECON 153 Population, Environment and Development
ENVECON 154 Economics of Poverty and Technology
ENVECON 161 Advanced Topics in Environmental and Resource Economics
ENVECON 162 Economics of Water Resources
ENVECON C175 The Economics of Climate Change (also IAS C175)
ENVECON C180 Ecological Economics in Historical Context (also ENE,RES C180)
ENVECON C181 International Trade (also ECON C181)

I usually take 23 units during the semester so I’m experienced with heavy course loads and am fine with Bs and Cs. Are these summer upper divs manageable or will the workload be too crazy to handle?? I want to make sure I don’t fail any of these classes or it will ruin my graduation plans.